Open AccessRadio sources at low Galactic latitudes
Author(s) -
Saikia D. J.,
Thomasson P.,
Roy S.,
Pedlar A.,
Muxlow T. W. B.
Publication year - 2004
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1111/j.1365-2966.2004.08244.x
Subject(s) - physics , giant metrewave radio telescope , astrophysics , astronomy , pulsar , supernova remnant , milky way , very long baseline interferometry , supernova , galaxy , radio galaxy
We present high‐resolution radio observations of a sample of 65 radio sources at low Galactic latitudes. The sources were all observed at 5 GHz with the Very Large Array A‐array. Multi‐Element Radio Linked Interferometer Network (MERLIN) observations at 5 GHz of the ultracompact H ii region G34.26+0.15 and one of the extragalactic sources, B1857−000, are also presented, as are Giant Metrewave Radio Telescope (GMRT) observations of H i in the direction of three sources, B1801−203, B1802−196 and B1938+229. These observations were made with the objectives of (i) finding compact components suitable for studying the effects of interstellar scattering at lower frequencies, (ii) identifying high surface brightness lobes of background radio sources to probe the Galactic magnetic field on different scales via polarization observations, and (iii) searching for young supernova remnants. We discuss the nature of the sources found to have shell or shell‐like structure and exhibiting both thermal and non‐thermal spectra. Of the remaining sources, B1749−281 is coincident within the positional errors of a known pulsar, not detected earlier at 5 GHz. The rest are likely to be background extragalactic objects.